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1、免费标准下载网(www.freebz.net)JISJAPANESEINDUSTRIALSTANDARDTranslatedandPublishedbyJapaneseStandardsAssociationLow-alloyedsteelsformachinestructuraluseICs77.140.10;77.140.20;77.140.70Referencenumber:JISG4053:2003(E)--```,,`````,````,`,,`,,`,```,``-`-`,,`,,`,`,,`---CopyrightJapaneseSt
2、andardsAssociationPROTECTEDBYCOPYRIGHT12sProvidedbyIHSunderlicensewithJSASoldto:Total,432687NoreproductionornetworkingpermittedwithoutlicensefromIHSNotforResale,07/25/200801:53:28MDT免费标准下载网(www.freebz.net)无需注册,即可下载免费标准下载网(www.freebz.net)G4053:2003ForewordThistranslationhasbeen
3、madebasedontheoriginalJapaneseIndustrialStandardestablishedbytheMinisterofEconomy,TradeandIndustrythroughdeliberationsattheJapaneseIndustrialStandardsCommitteeaccordingtotheproposalofestablishingaJapaneseIndustrialStandardfromTheJapanIronandSteelFederation(JISF),withadraftofIn
4、dustrialStandardbasedontheprovisionofArticle12Clause1oftheIndustrialStandardizationLaw.ThisrevisionhasbeenmadebasedonIS0683-1:1987Heat-treatablesteels,alloysteelsandfreecuttingsteels-Part1Direct-hardeningunalloyedandlow-alloyedwroughtsteelinformofdifferentblackproductsandIS068
5、3-11:1987Heat-treatablesteels,alloysteelsandfreecuttingsteels-Part11Wroughtcase-hardeningsteelsforthepurposesofmakingiteasiertocomparethisStandardwithInternationalStandard;toprepareJapaneseIndustrialStandardconformingwithInternationalStandard;andtoproposeadraftofanInternationa
6、lStandardwhichisbasedonJapaneseIndustrialStandard,reviewingJISG4102:1979,JISG4103:1979,JISG4104:1979,JISG4105:1979andJISG4106:1979,andintegratingthesefiveJapaneseIndustrialStandardsintooneStandard.Inthisrevision,apartoftheformerspecificationofJISofchemicalcompositionspecificat
7、ionandsoonarerevisedtomatchtheIS0Standardsmentionedaboveatthelevelof“MOD”inISODECGuide21.Consequently,JISG4102:1979,JISG4103:1979,JISG4104:1979,JISG4105:1979andJISG4106:1979arereplacedwithJISG4053:2003.AttentionisdrawntothepossibilitythatsomepartsofthisStandardmayconflictwitha
8、patentright,applicationforapatentafteropeningtothepublic,util
